The Lodger: A Story of the London Fog is a 1927 British silent thriller film directed by Alfred Hitchcock and starring Marie Ault, Arthur Chesney, June Tripp, Malcolm Keen and Ivor Novello. Hitchcock's third feature film, it was released on 14 February 1927 in London and on 10 June 1928 in New York City. The film is based on the 1913 novel The Lodger by Marie Belloc Lowndes and the play Who Is He? co-written by Belloc Lowndes. Its plot concerns the hunt for a Jack the Ripper-like serial killer in London.

Sir Michael Elias Balcon was an English film producer known for his leadership of Ealing Studios in West London from 1938 to 1955. Under his direction, the studio became one of the most important British film studios of the day. In an industry short of Hollywood-style moguls, Balcon emerged as a key figure, and an obdurately British one too, in his benevolent, somewhat headmasterly approach to the running of a creative organization. He is known for his leadership, and his guidance of young Alfred Hitchcock.